Design on the reservoir and pump placement continue. Brain not work

First foray into machining parts. I plan to use plastic for this reservoir, still exploring limitations on thickness, etc. Once dimensions are dialed in on the 3d printer I'll see how much it would cost. 

Attempting to find the ideal orientation for the tank and the pump. I've invested in a popular PC water cooling pump, the D5 for testing. It's around $80, but lasts significantly longer than the Chinese pumps. (Rated 5 years instead of ~2). It is also much easier to swap and source for the average person.